In the spaces between the gates dwell the Larvae of Yog Sothoth, half formed and abandoned by their progenitor they are ever hungry and seek to devour any flesh that passes the gates. But the adept who knows the seal of Yog Sothoth will not fear them for they are bound by it. Even as they are called through the gate and into the world of men are they bound by it, as when Ysra called them down upon the armies of Raasum-Ka and that great host of men was consumed in a single night. (Rlyeh Text, page 946, translated from the Primal Aklo by Prof. Ichiro)